The AirTAC GFR300C10MJF2GK AirTAC Filter Regulator G3/8 is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300C10MJF2GK is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has G3/8 ports, a manual drain bowl with a 40 um filter element, an embedded square gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is removed. It is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range with manual drain is 0.05-0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the size-300 frame; only the size-600 units use an aluminium alloy bowl.
This is a genuine AirTAC part from the G-series filter regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge and scale options, PT/G/NPT threads, and optional brackets. Flow figures for this series are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10MJF2GK AirTAC Filter Regulator G3/8 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding clamps and tool-change cylinders on a machining centre, the GFR300C10MJF2GK strips condensate and swarf-laden particulate from the shop air and holds a set clamping pressure, with the check valve keeping the circuit pressurised during supply dips.
On a carton-forming and sealing conveyor, this filter regulator conditions the air to the sealing cylinders and tape heads, keeping water out of the valves while the square psi gauge lets operators verify set pressure at a glance.
Supplying pneumatic valve actuators on a bottling or filling line, the unit filters line scale and moisture from the plant air and regulates it to the manifold pressure the valve actuator manufacturer specifies, draining manually at shift checks.
Start with the port and size step: GFR300 with 3/8 in ports sits mid-range in the GFR line (sizes 200/300/400/600), so match it to your pipe size and let the published flow curves - not a single rated number - settle the size. This unit has a manual drain, so an operator drains the bowl; choose the automatic or differential-pressure drain codes if the installation is unmanned. The 40 um element is the standard grade; specify the W code for 5 um where finer particulate removal matters. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are order options. Thread is G (BSPP) here, with PT as the catalogue standard and G/NPT as order options, and the J code means no bracket is fitted - add the bracket code if you wall- or panel-mount. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as performance curves rather than a single rated figure, so there is no one l/min or SCFM number we can quote honestly. Tell us your inlet pressure and the flow your application needs, and we will confirm the datasheet curve figures and check the sizing for you on request.
M is the manual drain: condensate collects in the polycarbonate bowl and an operator opens the drain at intervals, unlike the automatic or differential-pressure drain options in the range. K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply is lost. The F2 code is the embedded square gauge with a psi scale, and J means no mounting bracket is included.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.